20533444532 has 12 divisors (see below), whose sum is σ = 35954179716. Its totient is φ = 10260821760.

The previous prime is 20533444523. The next prime is 20533444537. The reversal of 20533444532 is 23544433502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1908291856 + 18625152676 = 43684^2 + 136474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20533444492 and 20533444501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533444537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467293 + ... + 1481220.

It is an arithmetic number, because the mean of its divisors is an integer number (2996181643).

Almost surely, 2^20533444532 is an apocalyptic number.

It is an amenable number.

20533444532 is a deficient number, since it is larger than the sum of its proper divisors (15420735184).

20533444532 is a wasteful number, since it uses less digits than its factorization.

20533444532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950258 (or 2950256 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

The spelling of 20533444532 in words is "twenty billion, five hundred thirty-three million, four hundred forty-four thousand, five hundred thirty-two".